Skip to main content
Scrum.org logo

  • Search Menu

    • Classes
    • Trainers
    • Resources
  • Log In
  • Register
  • About

    About Us

    Who is Scrum.org Learn about us and our mission
    Why Scrum.org What makes us different
    Partners Training companies and universities
    News Get the latest news and press
    Staff Meet our team
    Professional Scrum Trainers Find a trainer or request a private class
    Become a Professional Scrum Trainer Learn how to be a Professional Scrum Trainer
    Why Engage a Professional Scrum Trainer See what makes PSTs different than any trainer or coach?
    Diversity & Social Responsibility Learn about our commitment and support
    Careers Join our team
    Support Center View frequently asked questions and contact us

    Learn About Scrum

    What is Scrum Learn and find resources to get started
    Professional Scrum Defined Learn what it's all about
    The Scrum Guide Download and read the Scrum Guide
  • Training

    Training Details

    Class Schedule Find an upcoming public class
    Find a Trainer or Consultant Contact a trainer for request a private class or consulting engagement
    Student Reviews Read what students have to say
    Ways to Take a Class Different formats and delivery methods

    Courses by Accountability (Role)

    All Courses Get an overview of our courses
    Scrum Masters Courses to help Scrum Masters improve the abilities
    Product Owners Courses to help Product Owners improve their ability to deliver value
    Developers Courses to help Developers on the Scrum Team better fulfill their accountabilities
    Agile Leaders Courses to help leaders better support their teams

    Self-Paced Courses

    Professional Scrum Fundamentals Self-paced interactive course is designed for professionals who are new to Scrum and those who want to strengthen their Scrum capabilities.
    Professional Scrum Product Backlog Management Skills Self-paced course to improve your ability to manage all aspects of the Product Backlog

    Instructor Led Courses

    Applying Professional Scrum Work together in Scrum Teams
    Professional Scrum Master Explore Agile and Scrum principles
    Professional Scrum Master - Advanced Handle challenges and situations
    Professional Scrum Product Owner Discover product management skills & practices
    Professional Scrum Product Owner - Advanced Deepen understanding of the many PO stances
    Professional Scrum Product Owner - AI Essentials Training Introduces Product Owners and related professionals to the fundamentals of AI
    Professional Agile Leadership Essentials Support and empower agile teams
    Professional Agile Leadership - Evidence-Based Management Improve outcomes, capabilities and results
    Professional Scrum Product Backlog Management Skills Improve their ability to manage all aspects of the Product Backlog
    Professional Product Discovery and Validation Learn how to apply discovery and validation techniques
    Professional Scrum Facilitation Skills Improve Scrum Team, stakeholder and customer interactions
    Scaled Professional Scrum Learn skills to overcome scaling challenges
    Professional Scrum with Kanban Understand how flow can help Scrum Teams
    Professional Scrum with User Experience Create cross-functional teams
    Applying Professional Scrum for Software Development Learn Agile Software Practices
    Complementary Non-Scrum.org Courses These courses are created and delivered by our Professional Scrum Trainers and are not Scrum.org courses.
  • Certification

    Certifications

    All Certifications Learn about all available certifications
    Professional Scrum Master Fundamental, advanced & distinguished levels of Scrum Master knowledge in levels I, II & III
    Professional Scrum Product Owner Fundamental, advanced & distinguished levels of Product Owner knowledge in levels I, II & III
    Professional Scrum Developer Knowledge of practices and techniques that support building software with Scrum
    Professional Agile Leadership Value of agility and why leadership support is essential
    Professional Agile Leadership - EBM Advanced level of understanding about how an empirical approach helps organizations
    Scaled Professional Scrum Validate knowledge of scaling Scrum and the Nexus framework
    Professional Scrum Facilitation Skills Evidence that you can help teams move forward toward their desired outcomes
    Professional Scrum Product Backlog Management Skills Understanding how to effectively manage a transparent Product Backlog focused on value
    Professional Scrum with Kanban How Scrum Teams can use Kanban to improve flow and increase delivery of value
    Professional Scrum with User Experience Integrate modern UX practices into Scrum to deliver greater value
    Professional Product Discovery and Validation Understanding of how to appropriately use discovery and validation techniques

    Practice with Open Assessments

    All Practice Tests See all available practice tests
    Scrum Open Prepare for all certifications
    Product Owner Open Prepare for PSPO
    Software Developer Open Prepare for PSD
    Nexus Open Prepare for SPS
    Facilitation Skills Open Prepare for PSF Skills
    Kanban Open Prepare for PSK
    Agile Leadership Open Prepare for PAL
    Evidence-Based Management Open Prepare for PAL-EBM
  • Services
    Professional Product Ownership Capabilities Workshop Work with a Scrum.org PST to assess your current capabilities across a number of different Product Ownership areas to create an actionable plan for improvement.
    Consulting Services Through their consulting services, PSTs bring their experience and expertise to help companies deliver value.
  • Resources

    General Resources

    Search All Resources Search to find what you are looking for
    Resource Center Find resources to help you wherever you are on your learning journey
    Professional Scrum Competencies A set of focus areas that all classes and certifications are built upon

    By Accountability (Role)

    Scrum Master A set of resources for Scrum Masters
    Product Owner A set of resources for Product Owners
    Developers A set of resources for Developers on Scrum Teams
    Agile Leaders A set of resources for those leading agile teams

    Resources by Type (most popular)

    Guides Guides provide definitive descriptions of ways of working
    Webcasts Register for upcoming webcasts
    Videos Watch to learn from Scrum experts
    Case Studies See how others are using Scrum
    Blog Read the latest articles from our trainer community and staff
    Learning Series Walk through a series of content to learn about a specific topic
    Podcasts Listen to Recordings from our community and beyond
    Books By Ken Schwaber, Professional Scrum Trainers and Scrum.org
    FAQ Learn from some of the most frequently asked questions about Scrum
  • Community
    Blog Read the latest articles from our trainer community and staff
    Forum Ask questions and share answers with the community
    Events Find events that we participate in globally
    Become a Professional Scrum Trainer Learn how to be a Professional Scrum Trainer
    Search Professional Scrum Certification Holders Verify certifications
  • Innovations
    Scaling Scrum with Nexus Builds upon Scrum’s foundation to scale beyond a single team
    Scrum with Kanban Enhance and complement Scrum while improving flow
    Evidence Based Management (EBM) Measure, manage and increase the value derived from product delivery
    The Agile Product Operating Model Bridging modern product management and agile approaches
Main menu

About Us

Who is Scrum.org Learn about us and our mission
Why Scrum.org What makes us different
Partners Training companies and universities
News Get the latest news and press
Staff Meet our team
Professional Scrum Trainers Find a trainer or request a private class
Become a Professional Scrum Trainer Learn how to be a Professional Scrum Trainer
Why Engage a Professional Scrum Trainer See what makes PSTs different than any trainer or coach?
Diversity & Social Responsibility Learn about our commitment and support
Careers Join our team
Support Center View frequently asked questions and contact us

Learn About Scrum

What is Scrum Learn and find resources to get started
Professional Scrum Defined Learn what it's all about
The Scrum Guide Download and read the Scrum Guide

Training Details

Class Schedule Find an upcoming public class
Find a Trainer or Consultant Contact a trainer for request a private class or consulting engagement
Student Reviews Read what students have to say
Ways to Take a Class Different formats and delivery methods

Courses by Accountability (Role)

All Courses Get an overview of our courses
Scrum Masters Courses to help Scrum Masters improve the abilities
Product Owners Courses to help Product Owners improve their ability to deliver value
Developers Courses to help Developers on the Scrum Team better fulfill their accountabilities
Agile Leaders Courses to help leaders better support their teams

Self-Paced Courses

Professional Scrum Fundamentals Self-paced interactive course is designed for professionals who are new to Scrum and those who want to strengthen their Scrum capabilities.
Professional Scrum Product Backlog Management Skills Self-paced course to improve your ability to manage all aspects of the Product Backlog

Instructor Led Courses

Applying Professional Scrum Work together in Scrum Teams
Professional Scrum Master Explore Agile and Scrum principles
Professional Scrum Master - Advanced Handle challenges and situations
Professional Scrum Product Owner Discover product management skills & practices
Professional Scrum Product Owner - Advanced Deepen understanding of the many PO stances
Professional Scrum Product Owner - AI Essentials Training Introduces Product Owners and related professionals to the fundamentals of AI
Professional Agile Leadership Essentials Support and empower agile teams
Professional Agile Leadership - Evidence-Based Management Improve outcomes, capabilities and results
Professional Scrum Product Backlog Management Skills Improve their ability to manage all aspects of the Product Backlog
Professional Product Discovery and Validation Learn how to apply discovery and validation techniques
Professional Scrum Facilitation Skills Improve Scrum Team, stakeholder and customer interactions
Scaled Professional Scrum Learn skills to overcome scaling challenges
Professional Scrum with Kanban Understand how flow can help Scrum Teams
Professional Scrum with User Experience Create cross-functional teams
Applying Professional Scrum for Software Development Learn Agile Software Practices
Complementary Non-Scrum.org Courses These courses are created and delivered by our Professional Scrum Trainers and are not Scrum.org courses.

Certifications

All Certifications Learn about all available certifications
Professional Scrum Master Fundamental, advanced & distinguished levels of Scrum Master knowledge in levels I, II & III
Professional Scrum Product Owner Fundamental, advanced & distinguished levels of Product Owner knowledge in levels I, II & III
Professional Scrum Developer Knowledge of practices and techniques that support building software with Scrum
Professional Agile Leadership Value of agility and why leadership support is essential
Professional Agile Leadership - EBM Advanced level of understanding about how an empirical approach helps organizations
Scaled Professional Scrum Validate knowledge of scaling Scrum and the Nexus framework
Professional Scrum Facilitation Skills Evidence that you can help teams move forward toward their desired outcomes
Professional Scrum Product Backlog Management Skills Understanding how to effectively manage a transparent Product Backlog focused on value
Professional Scrum with Kanban How Scrum Teams can use Kanban to improve flow and increase delivery of value
Professional Scrum with User Experience Integrate modern UX practices into Scrum to deliver greater value
Professional Product Discovery and Validation Understanding of how to appropriately use discovery and validation techniques

Practice with Open Assessments

All Practice Tests See all available practice tests
Scrum Open Prepare for all certifications
Product Owner Open Prepare for PSPO
Software Developer Open Prepare for PSD
Nexus Open Prepare for SPS
Facilitation Skills Open Prepare for PSF Skills
Kanban Open Prepare for PSK
Agile Leadership Open Prepare for PAL
Evidence-Based Management Open Prepare for PAL-EBM
Professional Product Ownership Capabilities Workshop Work with a Scrum.org PST to assess your current capabilities across a number of different Product Ownership areas to create an actionable plan for improvement.
Consulting Services Through their consulting services, PSTs bring their experience and expertise to help companies deliver value.

General Resources

Search All Resources Search to find what you are looking for
Resource Center Find resources to help you wherever you are on your learning journey
Professional Scrum Competencies A set of focus areas that all classes and certifications are built upon

By Accountability (Role)

Scrum Master A set of resources for Scrum Masters
Product Owner A set of resources for Product Owners
Developers A set of resources for Developers on Scrum Teams
Agile Leaders A set of resources for those leading agile teams

Resources by Type (most popular)

Guides Guides provide definitive descriptions of ways of working
Webcasts Register for upcoming webcasts
Videos Watch to learn from Scrum experts
Case Studies See how others are using Scrum
Blog Read the latest articles from our trainer community and staff
Learning Series Walk through a series of content to learn about a specific topic
Podcasts Listen to Recordings from our community and beyond
Books By Ken Schwaber, Professional Scrum Trainers and Scrum.org
FAQ Learn from some of the most frequently asked questions about Scrum
Blog Read the latest articles from our trainer community and staff
Forum Ask questions and share answers with the community
Events Find events that we participate in globally
Become a Professional Scrum Trainer Learn how to be a Professional Scrum Trainer
Search Professional Scrum Certification Holders Verify certifications
Scaling Scrum with Nexus Builds upon Scrum’s foundation to scale beyond a single team
Scrum with Kanban Enhance and complement Scrum while improving flow
Evidence Based Management (EBM) Measure, manage and increase the value derived from product delivery
The Agile Product Operating Model Bridging modern product management and agile approaches
Log In Register
Profile picture placeholder

Callum Zorn-Singh

Callum's Certifications

Professional Scrum Master I certification logo
Professional Scrum Master I
Professional Scrum Master II certification logo
Professional Scrum Master II
Professional Scrum with Kanban I certification logo
Professional Scrum with Kanban I

Callum's Classes

PSK class logo
Professional Scrum with Kanban
Trainer: Alex Brown
Partner: b-agile
Attended: Mar 10-11, 2022
PSM-A class logo
Professional Scrum Master - Advanced
Trainer: Nichervan Fazel
Partner: Scrum Trainer
Attended: Aug 17-18, 2023
By using this site you are agreeing to the Privacy Policy and Terms of Service
Scrum.org logo

Footer Navigation

About
  • Who is Scrum.org
  • Latest News
  • Partners
  • Support Center
Quick Links
  • Class Schedule
  • Find a Trainer or Request a Private Class
  • Resources
  • The Scrum Guide
Social media
2025 © Scrum.org. All Rights Reserved.

Footer

  • Contact
  • Privacy
  • Terms of Service
  • TM and © Guidelines